philipguziec(at)yahoo.com
Guest
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 Posted: Tue Jun 16, 2009 1:13 pm Post subject: IO 720 fuel pump and pressure |
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Cross posted to fish for IO 720 experience.
Well, my new bird, which apparently the FAA designates as a SW50,�is safely snugged into a heated community hangar at UGN, and I'm eagerly looking forward to transition traning.� However, on the delivery flight,�teh right�engine (IO 720) showed a fuel pressure of 16 psi when running on the engine driven fuel pump which was recently replaced (for the second time).� After the replacement, the fuel pressure tested fine, but on the short flight to UGN it showed 16 vs a 22 to 25 psi target�range.� The boost pump works in the 22-25 range.
The pump is adjustable, so the pressure can be raised.� However, is this likely the result of a break-in drift in fuel pressure or should I be concerned that the pump will soon fail?� I don't recall a fuel pressure drift after the install of a new fuel pump on my IO 360, and I'm assuming this is of a similar design.
Thoughts?
Phil
SW50
M20E Turbo
UGN
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